Yeniseysk-15


Yeniseysk-15 was the site of a disputed Soviet phased array radar near Yeniseysk in Krasnoyarsk Krai, Siberia. The never operational Daryal radar installation was demolished in 1989 after the United States claimed it was in breach of the Anti-Ballistic Missile Treaty.

Daryal radar

The radar being built at Yeniseysk was a Daryal-U, a large phased array radar consisting of two separate large phased-array antennas apart. The transmitter array was and the receiver was in size. The system is a VHF system operating at a wavelength of 1.5 to 2 meters. The claimed range of a Daryal installation is.
Originally, at least seven Daryal facilities were planned, however, only the first two facilities completed, Pechora and Gabala, were ever operational. Two other Daryal-U type were to be built at Balkhash and Mishelevka, Irkutsk, neither were completed before the collapse of the Soviet Union.
CoordinatesAzimuthTypeBuilt
transmitter
receiver		40° Daryal-U1983-1987

Location

The Soviet Union started a programme to replace all Dnepr states that the United States and the Soviet Union agree:
Initially the manufacturers recommended two sites, Norilsk and Yakutsk, both of which were compliant with the treaty. They were overruled by the Ministry of Defence on cost grounds and Yeniseysk was selected despite being from the border. It was believed that Yeniseysk, being inland, would provide the coverage of two radars further out. It is also closer to the Siberian industrial region which would make it cheaper as it has good railway and power infrastructure nearby.

Controversy

The Soviet Union announced that the new radar was for space surveillance rather than for early warning of missile attack, and hence was compliant with the ABM treaty. The radar was given the designation OS-3 rather than an RO- designation which would be associated with an early warning site. However the radar appeared to be a Daryal radar which were used for ballistic missile early warning as well as space surveillance.
The United States complained and construction was halted in 1987. In 1989 the Soviet Union admitted that it was a breach of the treaty and it was demolished.